WO2017217091A1

WO2017217091A1 - Method for positioning inhibitor switch

Info

Publication number: WO2017217091A1
Application number: PCT/JP2017/014733
Authority: WO
Inventors: 俊介日沼
Original assignee: ジヤトコ株式会社
Priority date: 2016-06-15
Filing date: 2017-04-11
Publication date: 2017-12-21
Also published as: JPWO2017217091A1; KR20190016579A; US20190333722A1; JP6549323B2; US10930447B2; CN109312847B; CN109312847A

Abstract

Provided is a method for positioning an inhibitor switch (4) that uses a jig (3), the jig (3) having a fitting part (33) that fits by splines on a manual shaft (2), and an engaging pin (31) that engages in a positioning hole (432) in the inhibitor switch (4), wherein: a tooth space part (212a) is formed in the manual shaft (2) by cutting out at least one of a plurality of spline teeth (211) provided at prescribed intervals in the circumferential direction; the inner periphery of a fitting hole (34) of the fitting part (33) of the jig (3) is provided with a plurality of engaging protrusions (341b) that mesh with the spline teeth (211), and an engaging protrusion (341a) that engages in the tooth space part (212a); and in a state in which the engaging protrusion (341a) is engaged in the tooth space part (212a) to link the jig (3) to the manual shaft (2) so as to be incapable of relative rotation, the inhibitor switch (4) is positioned by being rotated about a rotational axis (X) to a position where the positioning hole (432) engages with the engaging pin (31) disposed in a prescribed position.

Description

Inhibitor switch positioning method

The present invention relates to a method for positioning an inhibitor switch.

An automatic transmission for a vehicle has a manual shaft that rotates around a rotation axis in conjunction with the operation of a shift lever, and an inhibitor that outputs a signal indicating a selection range in the automatic transmission is provided on the manual shaft. A switch is installed.

The inhibitor switch includes a movable member that rotates integrally with the manual shaft and supports the movable contact, and a fixed member that has a plurality of fixed contacts on a surface facing the movable contact.
In this inhibitor switch, when the manual shaft rotates in conjunction with the operation of the shift lever, the movable contact is displaced in the circumferential direction around the rotation axis, and the combination of the fixed contact with which the movable contact contacts is switched. The inhibitor switch is configured to output different signals depending on the combination of the movable contact and the fixed contact with which the movable contact comes into contact.

Here, the inhibitor switch is attached by (1) connecting the movable member to the manual shaft held at the N-range position so as not to be relatively rotatable, and (2) fixing the fixed member using a positioning jig, It is carried out by arranging it at a predetermined position corresponding to the N range position and fixing it to the transmission case with a bolt.

Patent Document 1 discloses a jig used for positioning an inhibitor switch.

As shown in FIG. 6, the positioning jig 100 disclosed in Patent Document 1 has a fitting hole 101 with the two-surface width portion 111 of the manual shaft 110 at one end in the longitudinal direction, and an inhibitor switch at the other end. Engaging pins 102 with positioning holes 121 provided in 120 are respectively provided.
Then, after fitting the fitting hole 101 of the jig 100 to the two-sided width portion 111 of the manual shaft held at the N range position, the engagement pin 102 of the jig 100 becomes the positioning hole of the inhibitor switch 120. By rotating the inhibitor switch 120 about the rotation axis X until it is engaged with 121, the inhibitor switch 120 (fixing member) can be accurately arranged at a position corresponding to the N range position.

In this state, the bolt B passing through the

mounting holes

122 and 123 of the inhibitor switch 120 is screwed into the bolt hole 131a of the bolt boss 131 of the transmission case, so that the inhibitor switch 120 is arranged at the N range position. In this state, it is fixed to the transmission case.

Thus, conventionally, the inhibitor switch 120 is positioned using the two-surface width portion 111 of the manual shaft 110 before being connected to the select lever side.

Here, the select lever is connected to the shift lever of the vehicle via a wire (not shown), and rotates around the rotation axis in conjunction with the operation of the shift lever.
Therefore, when the select lever is rotated about the rotation axis X by operating the shift lever, the manual shaft connected to the select lever is also rotated about the rotation axis X, and the movable member of the inhibitor switch is moved to the selected position of the shift lever. It is arranged at an angular position around the rotation axis X according to.

In recent years, various automatic transmissions have been proposed that employ a technique (so-called shift-by-wire) in which a manual shaft is rotated by a motor in accordance with a selection range detected by a sensor without using a wire and a select lever. .
In this case, one end of the manual shaft 110 is formed with spline teeth that mesh with the gear on the motor side instead of the two-sided width portion, and the inhibitor switch 120 using the conventional jig cannot be positioned. End up.

Therefore, even in the case of a manual shaft having spline teeth, there is a demand for enabling the inhibitor switch to be properly positioned.

JP-A-8-74978

The present invention
Using the positioning jig having a fitting portion that is spline fitted to the outer periphery of the manual shaft and an engaging pin that engages a positioning hole provided in the inhibitor switch, the inhibitor switch that is assembled to the manual shaft A positioning method for an inhibitor switch for positioning,
Seen from the rotational axis direction of the manual shaft,
On the outer periphery of the manual shaft, a missing tooth portion formed by cutting out at least one of a plurality of spline teeth provided at a predetermined interval in the circumferential direction is provided.
In the fitting portion, a plurality of internal teeth that mesh with the spline teeth and an engagement portion that engages with the missing tooth portion are provided on the inner periphery of the insertion hole of the manual shaft.
In the state where the engaging portion is engaged with the toothless portion and the jig is connected to the manual shaft so as not to rotate relative to the manual shaft, the inhibitor switch is connected to the engaging pin disposed at a predetermined position. It was set as the structure rotated by the periphery of the said rotating shaft to the position where a positioning hole engages.

By aligning the position of the toothless part and the engaging part, and connecting the manual shaft held at a predetermined position for positioning and the jig so that they cannot be rotated relative to each other, the engaging pin of the jig is removed from the rotational axis direction. Seen, they are always arranged at the same angular position.
Therefore, if the circumferential positioning around the rotation axis of the inhibitor switch supported by the manual shaft is performed using the engaging pins always arranged at the same angular position, the angular position in the circumferential direction around the rotation axis of the inhibitor switch Can always be the same.
Thereby, even in the case of a manual shaft having spline teeth, the inhibitor switch can be appropriately positioned.

It is a figure explaining positioning of an inhibitor switch. It is a figure explaining the inhibitor switch assembled | attached to the manual shaft. It is a figure explaining a jig | tool. It is a figure explaining the spline of a manual shaft. It is a figure explaining positioning of an inhibitor switch. It is a figure explaining positioning of the inhibitor switch concerning a prior art example.

Hereinafter, according to an embodiment of the present invention, a selection range of a shift lever (not shown) is detected by a sensor (not shown), and the manual shaft 2 is rotated by a motor (not shown) according to the detected range position. The case of positioning of the inhibitor switch 4 in an automatic transmission that employs a technique (so-called shift-by-wire) that is made to be described will be described as an example.

FIG. 1 is a view for explaining positioning of the inhibitor switch 4 using the jig 3, and FIG. 1A is a perspective view showing a state before the inhibitor switch 4 and the manual shaft 2 are assembled using the jig 3. It is a figure and (b) is a perspective view which shows the state which assembled | attached the inhibitor switch 4 and the manual shaft 2 using the jig | tool 3. FIG.
2A and 2B are diagrams for explaining the inhibitor switch 4 assembled to the manual shaft 2. FIG. 2A is a plan view, and FIG. 2B schematically shows an AA cross section in FIG. (C) is a plan view showing the inhibitor switch 4 together with the gear G1 meshed with the spline 21, and the positions of the movable contact 443 and the fixed contact 433 located inside the inhibitor switch 4 are shown in phantom lines. It is the figure shown by.

As shown in FIG. 1, a manual shaft 2 of an automatic transmission employing shift-by-wire is provided with a spline 21 that meshes with a gear G1 (see FIG. 2C) at one end in the longitudinal direction.
The gear G1 is a gear of a reduction gear train that transmits the output rotation of the motor (not shown), and the manual shaft 2 rotates when the output rotation of the motor (not shown) is input via the gear G1. It rotates around the axis X.

In the manual shaft 2, a two-surface width portion 22 is provided adjacent to the spline 21, and a movable member 44 (see FIG. 2B) of the inhibitor switch 4 is relatively rotated on the two-surface width portion 22. Linked impossible.

As shown in FIG. 2B, in the inhibitor switch 4, the movable member 44 that rotates integrally with the manual shaft 2 is accommodated in a space S formed between the base member 43 and the cover member 45. .
The movable member 44 has a support portion 442 extending in the radial direction from the connecting portion 441 with the manual shaft 2, and

movable contacts

443 and 443 are provided on a surface of the support portion 442 facing the base member 43. ing.

In the region of the base member 43 that faces the support portion 442, a plurality of

fixed contacts

433, 433, 433, and 433 that are arcuate when viewed from the direction of the rotation axis X are exposed (see FIG. 2C). Each of 433 is provided at intervals in the radial direction of the rotation axis X and has different lengths in the circumferential direction around the rotation axis X.
Therefore, when the manual shaft 2 rotates around the rotation axis X due to the output rotation of a motor (not shown), the position of the movable contact 443 of the movable member 44 is displaced in the circumferential direction around the rotation axis X, and the movable contact 443. The combination of the fixed contacts 433 connected to each other via the connector changes.

In the embodiment, when the manual shaft 2 rotates to an angular position corresponding to a selection range (for example, N range) of the shift lever, the combination of the fixed

contacts

433 and 433 connected to each other via the

movable contacts

443 and 443 is obtained. As a result of the combination corresponding to the N range, an output signal corresponding to the N range is output from the inhibitor switch 4.

In the base member 43, mounting

portions

435 and 436 having through-

holes

435a and 436a of the bolt B are provided at positions symmetrical with respect to the region where the fixed

contacts

433 and 433 are provided. As shown, after the inhibitor switch 4 is assembled to the manual shaft 2, the bolts B and B that penetrate the through

holes

435a and 436a are screwed into the bolt holes 131a of the bolt boss 131 of the transmission case. It is fixed to the transmission case.

The assembly of the inhibitor switch 4 to the manual shaft 2 is performed in a state where the manual shaft 2 protruding from the transmission case (not shown) is arranged at an angular position corresponding to the N range.

Here, the movable member 44 connected to the manual shaft 2 so as not to rotate relative to the manual shaft 2 is rotatable in through holes 431 and 451 (see FIG. 2B) penetrating the base member 43 and the cover member 45 of the inhibitor switch 4. It is supported by.
Therefore, when the inhibitor switch 4 is assembled to the manual shaft 2, if the relative positional relationship between the movable member 44 connected to the manual shaft 2 and the base member 43 in the circumferential direction around the rotation axis X is shifted, the movable switch 44 is movable. The combination of the fixed

contacts

433 and 433 connected to each other via the

contacts

443 and 443 becomes a combination different from the combination corresponding to the N range.

In this case, when the inhibitor switch 4 is assembled, even if the manual shaft 2 is arranged at an angular position corresponding to the N range, the output signal of the inhibitor switch 4 is a signal indicating a range different from the N range. turn into.
Therefore, in the embodiment, when the inhibitor switch 4 is assembled to the manual shaft 2, the positioning of the base member 43 in the circumferential direction around the rotation axis X is performed using the dedicated jig 3, so that the movable contact 443, The combination of the fixed

contacts

433 and 433 connected to each other via the H.443 is a combination corresponding to the N range.

Hereinafter, the jig 3 used for positioning the inhibitor switch 4 (base member 43) will be described.
3A and 3B are diagrams illustrating the jig 3 according to the embodiment. FIG. 3A is a plan view of the jig 3. FIG. 3B is a schematic cross-sectional view taken along the line AA in FIG. It is shown and (c) is a diagram showing a shape according to a modified example of the fitting hole 34.
4A and 4B are diagrams for explaining the spline 21 in which the fitting hole 34 of the jig 3 is fitted. FIG. 4A is a perspective view of the end portion of the manual shaft 2 on the spline 21 side, and FIG. FIG. 3 is a plan view of the spline 21 of the manual shaft 2 as viewed from the direction of the rotation axis, and is a diagram showing a part of the fitting hole 34 of the jig 3 that meshes with the spline 21 with a virtual line.

As shown in FIG. 3, the jig 3 has a plate-like base portion 30, and in the plan view, the base portion 30 has an outer shape in which the width W <b> 1 becomes narrower from the one end 30 a in the longitudinal direction toward the other end 30 b side. It is formed with.
The one end 30a side and the other end 30b side of the base 30 are subjected to curved surface processing, and the outer periphery 301 on the one end 30a side and the outer periphery 302 on the other end 30b side pass through the center of the base 30 in the width direction. An arc shape having the centers C1 and C2 positioned on the virtual line Lm is formed.
The base 30 is made of a highly rigid metal material, and is formed with the same thickness Wa over the entire length L1 in the longitudinal direction.

In a plan view, on the other end 30 b side of the base portion 30, a cylindrical engagement pin 31 is fixed at a position overlapping the above-described center C <b> 2, and the engagement pin 31 is provided in a direction orthogonal to the base portion 30. It has been.
The height h1 of the engaging pin 31 from the base 30 is such that the tip 31a side of the engaging pin 31 is provided on the base member 43 of the inhibitor switch 4 when positioning the inhibitor switch 4 using the jig 3. The height is set to be inserted into the positioning hole 432.
Here, the positioning hole 432 is provided so as to penetrate the base member 43 in the thickness direction, and the positioning hole 432 extends in the radial direction from the rotation axis X in a state where the inhibitor switch 4 is assembled to the manual shaft 2. It is formed in a long hole shape along the virtual line Lx (see FIG. 2A).

As shown in FIG. 3, in the jig 3, a cylindrical grip 32 is provided at a position away from the engagement pin 31 toward the one end 30 a of the base 30. The grip portion 32 is located closer to the one end 30 a than the center portion (L / 2) in the longitudinal direction of the base portion 30.
The grip portion 32 is a protrusion for gripping when the user uses the jig 3, and protrudes from the surface of the base portion 30 opposite to the engagement pin 31.

One end 30a side of the grip portion 32 in the base portion 30 is a fitting portion 33 with the manual shaft 2, and the fitting portion 33 is fitted into the spline 21 of the manual shaft 2 in plan view. A joint hole 34 is provided through the base 30 in the thickness direction.
In plan view, the center C1 of the fitting hole 34 coincides with the center C1 of the circular arc formed by the outer periphery 301, and the hole edge (inner periphery 340) of the fitting hole 34 is spaced from the center C1 at a predetermined interval. It is located on the surrounding virtual line IM1.

A plurality of engaging protrusions 341 (341a, 341b) are provided on the inner periphery 340 of the fitting hole 34 at intervals in the circumferential direction. These engaging protrusions 341 are splines on the manual shaft 2 side described later. It is an engaging part with the tooth 211.

In the embodiment, the engagement protrusion 341 includes an engagement protrusion 341a (engagement portion) having a wide angle range Ra around the center C1, and an engagement protrusion 341b (internal tooth) having an angle range Rb smaller than the engagement protrusion 341a. The engaging

protrusions

341a and 341a are provided in a positional relationship that is symmetrical on the diameter line Ln of the fitting hole 34 that passes through the center C1.
A plurality of engaging protrusions 341b are provided at equal intervals in the circumferential direction between the engaging

protrusions

341a and 341a adjacent in the circumferential direction.

Here, the number and position of the

engagement protrusions

341a and 341a in the fitting hole 34 are set according to the shape of the spline 21 of the manual shaft 2 into which the fitting hole 34 is fitted.
In the embodiment, when the fitting hole 34 of the jig 3 is engaged with the spline 21 on the rotation axis X of the manual shaft 2, the engagement pin 31 of the jig 3 rotates around the rotation axis X. The number and position of the

engagement protrusions

341a and 341a in the fitting hole 34 are set so as to be arranged at predetermined positions in the direction.

Specifically, with the jig 3 attached to the manual shaft 2 arranged in the N range, the angular position around the rotation axis X of the base member 43 of the inhibitor switch 4 is set to the positioning hole 432 of the base member 43. The manual shaft 2 is arranged so that the combination of the fixed contacts 433 connected to each other via the

movable contacts

443 and 443 is the combination in the N range when the engagement pin 31 of the jig 3 is disposed at the position where the engagement pin 31 is engaged. The position of the engagement pin 31 in a state where the jig 3 is assembled to the jig 3 is set.

The spline 21 into which the fitting hole 34 of the jig 3 is fitted when the jig 3 is assembled to the manual shaft 2 has spline teeth 211 on the outer periphery of the columnar base 210 as shown in FIG. ing.
A plurality of spline teeth 211 are provided at predetermined intervals in the circumferential direction around the rotation axis X. In the embodiment, the spline teeth 211 are positioned on the diameter line Lo of the base 210 passing through the rotation axis X when viewed from the rotation axis X direction. Two spline teeth 211 have been removed.
Therefore, on the outer periphery of the base portion 210, a tooth groove portion 212a (missing tooth portion) having a wide circumferential angle range around the rotation axis X and a tooth groove portion 212b having a narrower circumferential angle range than the tooth groove portion 212a are provided. The tooth gap portions 212a are provided at intervals of 180 ° in the circumferential direction around the rotation axis X.

Here, if the splines 21 are provided at equal intervals in the circumferential direction around the rotation axis, there is no reference for checking the angular position of the manual shaft 2 around the rotation axis, so the manual shaft 2 is in the N range. Even when the jigs 3 are arranged at the corresponding angular positions, it is impossible to determine in which direction the jig 3 to be fitted to the spline 21 should be assembled.

Therefore, in the embodiment, as a reference for confirming the angular position around the rotation axis X of the manual shaft 2, a tooth groove portion 212a from which the spline teeth 211 are removed is formed in the base portion 210, and the tooth groove portion 212a By providing the engaging protrusions 341 a to be engaged with the inner periphery 340 of the fitting hole 34 of the jig 3, when the jig 3 is assembled to the spline 21, the engaging pin 31 of the jig 3 is connected to the rotation axis X. It is always arranged at a predetermined position in the circumferential direction.

Hereinafter, the assembly of the inhibitor switch 4 to the manual shaft 2 will be described.
FIG. 5 is a diagram illustrating the positioning of the inhibitor switch 4 using the jig 3. In FIG. 5, the positions of the engagement pins 31 located on the back side of the paper surface at the base 30 of the jig 3 are indicated by hatching. Moreover, the area | region hidden in the jig | tool 3 in the inhibitor switch 4 is shown with the virtual line.

The manual shaft 2 before the inhibitor switch 4 is assembled is provided with one end provided with the spline 21 protruding outside the transmission case. In this state, the angle around the rotation axis X of the manual shaft 2 is provided. The position is arranged at a position corresponding to the N range.

When the inhibitor switch 4 is extrapolated to one end of the manual shaft 2 where the spline 21 is provided, and the movable member 44 provided in the inhibitor switch 4 is connected to the two-surface width portion 22 of the manual shaft 2 in a relatively non-rotatable manner, The spline 21 of the manual shaft 2 is disposed at a position protruding upward from the cover member 45 of the inhibitor switch 4.

In this state, the base member 43 and the cover member 45 of the inhibitor switch 4 can be displaced in the circumferential direction around the rotation axis X. When the angular position of the base member 43 around the rotation axis X changes, the movable contact 443, The combination of the fixed contacts 433 connected to each other via 443 changes according to the position of the base member 43.

Here, since the manual shaft 2 is held at the N range position, the rotation axis X of the base member 43 is set so that the combination of the fixed contacts 433 connected to each other via the

movable contacts

443 and 443 becomes the N range. It is necessary to adjust the surrounding angular position so that the output signal of the inhibitor switch 4 becomes an output signal indicating the N range.

When the fitting hole 34 of the jig 3 is fitted to the spline 21 of the manual shaft 2 arranged at the N range position, the engagement pin 31 of the jig 3 is rotated around the rotation axis X as described above. It is arranged at a predetermined position in the direction (see FIG. 5).
The angular position of the engagement pin 31 in the circumferential direction around the rotation axis X in this state is determined by engaging the positioning hole 432 of the base member 43 with the engagement pin 31 via the

movable contacts

443 and 443. A combination of the fixed contacts 433 connected to each other is set to be in the N range.

Therefore, in the case of FIG. 5A, the base member 43 of the inhibitor switch 4 is rotated around the rotation axis X in the clockwise direction, and the engagement pin 31 and the positioning hole 432 shown in FIG. Is placed at an angular position where the two coincide with each other, the inhibitor switch 4 can be positioned at a position to output a signal indicating that the output signal of the inhibitor switch 4 is in the N range.

In the case of FIG. 5C, the base member 43 of the inhibitor switch 4 is rotated counterclockwise around the rotation axis X, and the engagement pin 31 and the positioning hole shown in FIG. By arranging at the angular position where 432 coincides, the inhibitor switch 4 can be positioned at a position to output a signal indicating that the output signal of the inhibitor switch 4 is in the N range.

Here, in the

attachment portions

435 and 436 of the inhibitor switch 4, the through

holes

435 a and 436 a of the bolt B are formed in long hole shapes along virtual circles La and Lb along the circumferential direction around the rotation axis X, respectively. (See (a) in FIG. 2). Therefore, even if the base member 43 is rotated around the rotation axis X within an error range based on the position shown in FIG. 5B, the bolt holes of the

bolt bosses

131 and 131 are located inside the through

holes

435a and 436a. 131a and 131a are always exposed.

Therefore, after the base member 43 of the inhibitor switch 4 is displaced around the rotation axis X and positioned, the bolts B and B through the through-

holes

435a and 436a are screwed into the bolt holes 131a and 131a. 4 can be held at a predetermined position after positioning.

As described above, in the embodiment,
(1) Using a positioning jig 3 having a fitting portion 33 that is spline-fitted to the outer periphery of the manual shaft 2 and an engagement pin 31 that engages a positioning hole 432 provided in the inhibitor switch 4, A method of positioning the inhibitor switch 4 for positioning the inhibitor switch 4 assembled to the manual shaft 2,
Seen from the direction of the rotation axis X of the manual shaft 2,
The outer periphery of the base portion 210 of the manual shaft 2 is provided with a tooth groove portion 212a (missing tooth portion) formed by cutting out at least one of the plurality of spline teeth 211 provided at predetermined intervals in the circumferential direction. ,
In the fitting portion 33, a plurality of engaging projections 341 b (inner teeth) that mesh with the spline teeth 211 and an engaging projection 341 a (engagement) that engages with the tooth groove portion 212 a are formed on the inner periphery of the fitting hole 34 of the manual shaft 2. Are provided, and
With the engagement protrusion 341a (engagement portion) engaged with the tooth groove portion 212a and the jig 3 being connected to the manual shaft 2 in a relatively non-rotatable manner, the inhibitor switch 4 is an engagement pin disposed at a predetermined position. 31, the bolts B and B that pass through the through

holes

435 a and 436 a of the mounting

portions

435 and 436 are inserted into the

bolt bosses

131 and 131. The inhibitor switch 4 is fixed to the transmission case side of the automatic transmission by screwing into the

bolt holes

131a and 131a.

In this way, when the position of the tooth groove portion 212a and the engagement protrusion 341a are aligned and the manual shaft 2 held at the predetermined position for positioning and the jig 3 are connected so as not to be relatively rotatable, the jig 3 The engagement pin 31 is always arranged at the same angular position when viewed from the direction of the rotation axis X.
Therefore, when the inhibitor switch 4 (base member 43) is rotated and rotated around the rotation axis X to the position where the positioning hole 432 is engaged with the engagement pin 31 arranged at a predetermined position, the rotation shaft of the inhibitor switch 4 is rotated. The relative angular position with respect to the manual shaft 2 in the circumferential direction around X can always be the same.
Therefore, even in the case of the manual shaft 2 having the spline teeth 211, the relative positioning of the inhibitor switch 4 with respect to the manual shaft 2 can be appropriately performed.

(2) The spline teeth 211 on the outer periphery of the manual shaft 2 constitute a gear that meshes with the gear G1 that rotates by the output rotation of the motor M.

When configured in this way, as in the case of the manual shaft 2 of an automatic transmission that employs so-called shift-by-wire, spline teeth 211 that mesh with the gear on the motor side are formed instead of the two-surface width portion. Also, the inhibitor switch 4 can be properly positioned and fixed.

(3) Two tooth gap portions 212a (missing tooth portions) when viewed from the direction of the rotation axis X are provided in a symmetrical positional relationship across the rotation axis X.
The fitting hole 34 of the fitting portion 33 includes two engagement protrusions 341a (engagement portions) that engage with the tooth groove portions 212a (missing tooth portions) in a positional relationship that is symmetric with respect to the rotation axis X. It was set as the composition.

With this configuration, the fitting hole 34 of the fitting portion 33 of the jig 3 can be spline fitted to the spline teeth 211 of the manual shaft 2 using the two tooth gap portions 212a (missing tooth portions) as marks. The jig 3 can be connected to the manual shaft 2 in an appropriate orientation so as not to rotate relative to the manual shaft 2.

Moreover, the assembly direction of the jig 3 with respect to the manual shaft 2 is greater when two tooth groove portions 212a (missing tooth portions) are provided than when only one tooth groove portion 212a (missing tooth portion) is provided. Since it becomes easy to understand, the assembly | attachment of the jig | tool 3 with respect to the manual shaft 2 can be performed easily.

(4) The inhibitor switch 4 is
A movable member 44 connected to the manual shaft 2 by a two-sided width fitting so as not to be relatively rotatable and supporting the movable contact 443;
A base member 43 having a plurality of fixed contacts 433 on a surface facing the movable contact 443 and having a positioning hole 432;
When the manual shaft 2 rotates around the rotation axis X, the movable contact 443 is displaced in the circumferential direction around the rotation axis X, and the combination of the fixed contact 433 that the movable contact 443 contacts is switched.
The manual shaft 2 when the jig 3 is connected so as not to be relatively rotatable is at an angular position (predetermined position) corresponding to one selected range (for example, N range) position among a plurality of selected ranges of the automatic transmission. Has been placed,
The angular position (predetermined position) is a fixed contact 433 to which the movable contact 443 comes into contact when the inhibitor switch 4 (base member 43) is disposed at a position where the engagement pin 31 can be engaged with the positioning hole 432 from the rotation axis X direction. (A combination of the fixed contacts 433 connected to each other via the movable contact 443) is set to a position corresponding to the above-described one selected range (for example, N range).

If comprised in this way, the selection range which the output signal of the inhibitor switch 4 shows and the actual selection range of an automatic transmission can be made to correspond, and the assembly to the manual shaft 2 of the inhibitor switch 4 can be performed appropriately. it can.

In the above-described embodiment, the case where the number of the tooth groove portions 212a (missing tooth portions) in the spline 21 is the same as the number of the engaging protrusions 341a (engaging portions) in the jig 3 is illustrated ((( See a).)
The present invention is not limited to this aspect, and the number of the engagement protrusions 341a (engagement portions) in the jig 3 may be smaller than the number of the tooth groove portions 212a (missing tooth portions) in the spline 21. good.

For example,
(5) Two tooth gap portions 212a (missing tooth portions) as viewed from the direction of the rotation axis X are provided in a symmetrical positional relationship across the rotation axis X.
The fitting hole 34 of the fitting part 33 may be configured to include one engagement protrusion 341a (engagement part) that engages with the tooth groove part 212a (missing tooth part).

If comprised in this way, since the two tooth space parts 212a (missing tooth part) can be used as a mark, the fitting hole 34 of the fitting part 33 of the jig 3 can be spline fitted to the spline 21 of the manual shaft 2. The jig 3 can be connected to the manual shaft 2 in an appropriate orientation so as not to be relatively rotatable.
In particular, even if the phase of the manual shaft 2 is shifted by 180 degrees, the jig 3 can be connected to the manual shaft 2 in an appropriate orientation so as not to be relatively rotatable without correcting the phase of the manual shaft 2.

Claims

Using the positioning jig having a fitting portion that is spline fitted to the outer periphery of the manual shaft and an engaging pin that engages a positioning hole provided in the inhibitor switch, the inhibitor switch that is assembled to the manual shaft A positioning method for an inhibitor switch for positioning,
Seen from the rotational axis direction of the manual shaft,
On the outer periphery of the manual shaft, a missing tooth portion formed by cutting out at least one of a plurality of spline teeth provided at a predetermined interval in the circumferential direction is provided.
In the fitting portion, a plurality of internal teeth that mesh with the spline teeth and an engagement portion that engages with the missing tooth portion are provided on the inner periphery of the insertion hole of the manual shaft.
In the state where the engaging portion is engaged with the toothless portion and the jig is connected to the manual shaft so as not to rotate relative to the manual shaft, the inhibitor switch is connected to the engaging pin disposed at a predetermined position. A method for positioning an inhibitor switch, wherein the positioning is performed by rotating around the rotation axis to a position where the positioning hole is engaged.
2. The inhibitor switch positioning method according to claim 1, wherein the spline teeth on the outer periphery of the manual shaft constitute a gear that meshes with a gear rotated by an output rotation of a motor.
The missing tooth portion as viewed from the rotation axis direction is provided in two symmetrical relations across the rotation axis,
The inhibitor switch positioning method according to claim 1, wherein the fitting portion includes two engaging portions that engage with the missing tooth portion.
The missing tooth portion as viewed from the rotation axis direction is provided in two symmetrical relations across the rotation axis,
The fitting portion includes one engaging portion that engages with the missing tooth portion,
The engagement pin of the jig is set so as to be arranged at the predetermined position when the fitting portion is engaged with one of the two toothless portions. The method for positioning an inhibitor switch according to claim 1 or 2.
The inhibitor switch is
A movable member connected to the manual shaft so as not to be relatively rotatable and supporting a movable contact;
A fixed member having a plurality of fixed contacts on the surface facing the movable contact and having the positioning hole;
When the manual shaft rotates around the rotation axis, the movable contact is displaced in the circumferential direction around the rotation axis, and the combination of the fixed contacts with which the movable contact contacts is switched.
The manual shaft when the jig is coupled so as not to be relatively rotatable is disposed at an angular position corresponding to one selected range of the selected range of the automatic transmission,
The predetermined position is a combination in which the combination of the fixed contacts with which the movable contact comes into contact corresponds to the one selection range when the fixing member is disposed at a position where the engagement pin engages with the positioning hole. The method of positioning an inhibitor switch according to any one of claims 1 to 4, wherein the position is set to a position where